On 28.12.2006 16:05, Josselin wrote:
> On 2006-12-28 15:19:43 +0100, dblack / wobblini.net said:
>
>> Hi --
>>
>> On Thu, 28 Dec 2006, Josselin wrote:
>>
>>> is there any dry way to get the index of an element in a range
>>> without converting the range into an array ?
>>>
>>> ("A".."Z").each do | alpha |
>>> -> puts alpha.index (?) or something like that .... <-
>>> end
>>
>> ("A".."Z").each_with_index do |alpha,i|
>> puts i
>> end
>>
>>
>> David
>
> thanks a lot.. another part of my book to read before year end ;-)))
> all 'each_ .... ' statements
>
Here's another one
irb(main):005:0> require 'enumerator'
=> true
irb(main):010:0> (1..10).to_enum(:each_with_index).find {|a,b| a==2}[1]
=> 1
robert